<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
	</body>
</html>
<script type="text/javascript">
	var arr = [11,22,33,44,55,66];
	var obj = {}
	// var arr2 = arr.filter(function(val,index,arr){
	// 	return 0;
	// },obj)
	var arr2 = arr.filter(function(val,index,arr){
		console.log(val)
		if(val > 30){
			return false
		}else{
			return true
		}
	})
	console.log(arr2)
</script>